Hi,

We are updating the extension, therefore a popup might appear (it will only happen once per browser/device), but you can simply close it and continue browsing. If you are seeing many payment tabs all at once or encountering the payment page every time you open your browser, please reach out to us via our support form and we'll be happy to assist you: https://help.adblockplus.org/hc/en-us/requests/new.